It’s a fact that pit bulls, with their powerful jaws, can kill and maim. But are pit bulls born bad or do humans make them that way? Therein lies an emotional – sometimes vicious – debate. On one side, traumatized families and public safety advocates. On the other, a powerful group of lobbyists who say that pit bulls are misunderstood and legislation to ban the breed is misguided. The Fifth Estate's Mark Kelley speaks to concerned parties on both sides of the debate. Warning: This program contains scenes that may be disturbing to some viewers. Viewer discretion is advised.